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111.
112.
We administered a modified version of the test of Semenza, Denes, Lucchese, and Bisiacchi (Brain and Language, 10, 243-248 (1980)) for selective deficits in conceptualization to a group of normals and psychiatric patients. Analysis of the results obtained with the normal sample revealed several psychometric problems. The two components of the test (one for thematic and one for class relationships) each had poor internal consistency and were significantly different from each other on a measure of discriminating power. It is not clear if our results are related to difficulty in applying the test to an English-speaking population or reflect inherent psychometric problems. 相似文献
113.
Right hemisphere appreciation of prosodic and linguistic indications of implicit attitude 总被引:4,自引:1,他引:3
Appreciation of attitudes conveyed through prosodic cues and lexical content was examined in subjects with temporal lobe seizure foci. One task involved auditory judgments of the consistency of verbal and intonational meaning of sentences. Errors on judgments of consistent verbal and prosodic stimuli were not only more frequent in the right temporal group than in left temporals or controls but were strongly related to neuropsychological indices associated with extent of right temporal involvement. Answering questions based on written narratives in which multiple attitude markers were either redundant or conflicting comprised the second task. Right temporal patients as a group had difficulty in answering inferential questions about paragraphs with inconsistent indicators of attitude. Even low-scoring right temporals were able, however, to answer inferential and factual questions when the verbal context markers consistently reinforced a particular attitude. 相似文献
114.
The role of the right hemisphere in the control of speech prosody in propositional and affective contexts 总被引:2,自引:0,他引:2
Sixteen right-handed adult males with localized insult to either the right or left hemisphere and five control subjects without brain damage read aloud target sentences embedded in paragraphs, while intoning their voices in either a declarative, interrogative, happy, or sad mode. Acoustical analysis of the speech wave was performed. Right-anterior (pre-Rolandic) and right-central (pre- and post-Rolandic) brain-damaged patients spoke with less pitch variation and restricted intonational range across emotional and nonemotional domains, while patients with right posterior (post-Rolandic) damage had exaggerated pitch variation and intonational range across both domains. No such deficits were found in patients with left posterior damage, whose prosody was similar to that of normal control subjects. It is suggested that damage to the right hemisphere alone may result in a primary disturbance of speech prosody that may be independent of the disturbances in affect often noted in right-brain-damaged populations. 相似文献
115.
It is assumed that in a free-recall task the short-term store serves as a memory buffer between the long-term store and a final motor stage of word production. Because of this the retrieval process in long-term store is not hindered by the final motor stage of word production since continued output from the long-term store queues in the buffer for motoric processing. Otherwise a time consuming communication between the two processes would be necessary. A stochastic model of this conceptualization is provided to predict the temporal course of free recall as well as a paradigm in which the contribution of the short-term store in free recall can be studied. The experimental results from this paradigm were used to test the model and to estimate short-term storage capacity on the basis of the time course of free recall. The model predictions were in good agreement with the data and the capacity estimate coincides well with estimates found by totally different methods reported in the literature. 相似文献
116.
To date, research has not explicitly examined how duration competes with other stimulus dimensions for control over responding. The present study investigated some familiar selective mechanisms of stimulus control over key pecking in pigeons, with duration and line tilt as discriminative stimuli in successive discrimination procedures. Specifically, pigeon's key pecking was reinforced with food or extinguished following compound stimuli comprising one of two line orientation stimuli presented for one of two different durations. Traditional experimental designs explored stimulus additivity, overshadowing, blocking, and learned irrelevance. Although stimulus additivity was observed, control by duration was masked by line tilt in extinction testing that followed facilitated acquisition with redundant, relevant cues. In addition, although prior training with duration relevant partially blocked subsequent acquisition of control by line tilt when both stimulus dimensions were relevant, there was a tendency for control by duration to decrease with continued compound training. It was suggested that the greater time required to distinguish duration on a trial—compared to more commonly studied stimulus dimensions, which can be distinguished almost immediately—puts duration at a competitive disadvantage in situations where other relevant dimensions are also available. 相似文献
117.
The concept of the artes liberales originates in antiquity and was, especially in the Anglo-Saxon area and during the 17th and 18th centuries, remodelled into a socially, educationally, and politically modern educational concept. In this process, the progress within the empirical sciences and the formation of an early civil public are of the utmost importance. In the course of these transformations, the absolute force of church and state is called into question; educational concepts which have to be called modern emerge from it. 相似文献
118.
We reply to three major points made by F. Horowitz (1983, Developmental Review, 3, 405–409) in her commentary on the ecological approach to infant knowing presented by E. Goldfield (1983, Developmental Review, 3, 371–404). We first clarify the relation between perceiving and acting from an ecological perspective, and distinguish between affordances as environmental properties scaled to the perceiver/performer and representations as mental structures. We then present a critique of the process of association offered by Horowitz as an explanation of infant learning. Association fails to specify the constraints on what is learned, while the ecological process of noticing affordances, presented by Goldfield, considers such constraints. We conclude by presenting operational criteria for measuring affordances and evidence that perception is scaled to the perceiver/performer. 相似文献
119.
Contrary to previous findings documenting the importance of higher-order need satisfaction, a recent study by G. J. Gorn and R. N. Kanungo (Organizational Behavior and Human Performance, 1980, 26, 265–277) has indicated that satisfaction of lower-order needs may lead to job involvement if such needs are salient. Data from a heterogeneous sample of 632 employees from six organizations were used to test six hypotheses concerning the effects of need level (higher vs lower order) and need salience as moderators of the relationship between need satisfaction and alienation-involvement. Three different ways of operationalizing need saliency were used, including a replication of Gorn and Kanungo's procedure. Higherorder need satisfaction was correlated with alienation-involvement scores to a significantly greater degree than was lower-order need satisfaction, even for those for whom lower-order needs were most salient. Need saliency was not found to moderate the need satisfaction-involvement relationship when need level was controlled. Issues regarding the operationalization of “need salience” were discussed and a new measure of alienation-involvement (the A-I Scale) was introduced. Implications for further empirical investigations of the need saliency issue were noted, as was the universal application of job enrichment programs aimed at promoting higher-order need satisfaction. 相似文献
120.
Twenty-two subjects with presumed senile dementia of the Alzheimer's type (SDAT), twenty-two with dementia other than SDAT, twenty with aphasia, and seventeen healthy controls over 50 years of age were examined for intrusions and perseverations. Perseverations were defined as the immediate inappropriate repetition of a prior response whereas intrusions were defined as the inappropriate repetition of prior responses after intervening stimuli. Intrusions and perseverations occurred in demented and aphasic subjects, but were rare in controls. Intrusions occurred most often in SDAT or Wernicke aphasia, but also in dementia other than SDAT. Intrusions were not correlated with dementia severity. Intrusions are a useful sign of dementia, but they cannot be considered pathognomonic of SDAT. They appear to arise when subjects are unable to access correct responses from long-term memory and instead substitute erroneous responses selected from short-term memory. Perseverations were most common in the Wernicke aphasics and subjects with dementia due to communicating hydrocephalus. Although frontal lobe dysfunction is prominent in communicating hydrocephalus, it is absent in cases of Wernicke aphasia. Thus, we have confirmed prior suggestions that perseveration can occur in the absence of frontal lobe injury. Failure to self-monitor speech as well as an inability to change mental set probably plays an important role in the genesis of perseverations. There was no statistically significant correlation between dementia severity and number of perseverations. Low correlations were found between intrusions and perseverations suggesting that these seemingly similar behaviors are distinct and are probably produced by separate neuropsychological mechanisms. 相似文献